The contrast research of the finite element simulation for ordinary and fine blanking with negative clearance
This paper puts forward a negative clearance fine-blanking theory and its technique process, and introduces the technical processing of fine-blanking which can be used on ordinary punching machines. In this paper, computer simulation and the experimental study of negative clearance fine-blanking process are carried out. Thus the parameters of the force of blanking, the value of negative clearance are determined. The effect of fine-blanking quality was obtained, and the perfect rate of the blanking fracture achieves 90％. By comparing negative clearance precise blanking with conventional blanking, the following conclusions are drawn: 1. Blanking quality of negative clearance blanking is increased by 57％ than that of conventional blanking. 2. The down surface of the work-pieces obtained by the conventional blanking processing have 0.2-0.5 mm longitudinal burrs, while the work-pieces obtained by the negative clearance blanking have no burrs. Thus the processing of clear away the burrs could be spared. And the manpower, the material, energy and the equipment investment are saved. The researching result provides theoretic reference and the experimental data for the engineering practice. It has instructive significance and reference value to engineering manufacturing.
Negative clearance precise blanking simulation parameter
H.Du S.M.Ding
Department of mechanical and electric engineering, Zhongyuan university of technology Department of energy and environmental engineering, Zhongyuan university of technology,Zhengzhou，450
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）